---Listen! Someone is singing in the next room．Who it be? Is it Wei Fang? ---No．

---Listen! Someone is singing in the next room．Who ______ it be? Is it Wei Fang?

---No．It ______ be her．She is at school now．

A.can; may not

B.must; mustn’t

C.can; can’t

D.may; won’t

试题答案

C

考查情态动词。Can意思是能，否定含义是不能，不可能。Must意思是一定，必须，否定含义是禁止；may意思是可以，否定含义是不可以。句意：听！有人在隔壁唱歌。他可能是谁？它是卫芳吗？——不，不可能是她。她现在在学校呢。选C。